Hello all. Long time reader, first time poster.
I am trying to make a basic wireless transmitter with 2 momentary buttons and receiver that takes the signal from the Tx and moves 2 different servos. The transmitter is Arduino Uno with nRF24L01 and the receiver is Arduino Micro (not pro micro) also with nRF24L01.
Using the code below, I was able to successfully make this project using (2) Arduino Uno's. Everything worked without issue. When I change the receiver to Arduino Micro, using the wiring schematic below, the project does not work. Serial monitor of the receiver just says "X=0, Y=0". Nothing happens with buttons are pressed, and never do I get "Radio not available".
Do I need to change something with regard to the connections/coding due to using the Micro instead of the Uno? Please help. Thanks in advance.
Transmitter Code:
/* YourDuinoStarter Example: nRF24L01 Transmit Joystick values
- WHAT IT DOES: Reads Analog values on A0, A1 and transmits
them over a nRF24L01 Radio Link to another transceiver.
- SEE the comments after "//" on each line below
- CONNECTIONS: nRF24L01 Modules See:
http://arduino-info.wikispaces.com/Nrf24L01-2.4GHz-HowTo
1 - GND
2 - VCC 3.3V !!! NOT 5V
3 - CE to Arduino pin 9
4 - CSN to Arduino pin 10
5 - SCK to Arduino pin 13
6 - MOSI to Arduino pin 11
7 - MISO to Arduino pin 12
8 - UNUSED
-
Analog Joystick or two 10K potentiometers:
GND to Arduino GND
VCC to Arduino +5V
X Pot to Arduino A0
Y Pot to Arduino A1
- V1.00 11/26/13
Based on examples at http://www.bajdi.com/
Questions: terry@yourduino.com */
/*-----( Import needed libraries )-----*/
#include <SPI.h>
#include <nRF24L01.h>
#include <RF24.h>
/*-----( Declare Constants and Pin Numbers )-----*/
#define CE_PIN 9
#define CSN_PIN 10
#define JOYSTICK_X 7
#define JOYSTICK_Y 8
// NOTE: the "LL" at the end of the constant is "LongLong" type
const uint64_t pipe = 0xE8E8F0F0E1LL; // Define the transmit pipe
/*-----( Declare objects )-----*/
RF24 radio(CE_PIN, CSN_PIN); // Create a Radio
/*-----( Declare Variables )-----*/
int joystick[2]; // 2 element array holding Joystick readings
void setup() /****** SETUP: RUNS ONCE ******/
{
Serial.begin(9600);
radio.begin();
radio.openWritingPipe(pipe);
}//--(end setup )---
void loop() /****** LOOP: RUNS CONSTANTLY ******/
{
joystick[0] = digitalRead(JOYSTICK_X);
joystick[1] = digitalRead(JOYSTICK_Y);
radio.Write( joystick, sizeof(joystick) );
}//--(end main loop )---
/*-----( Declare User-written Functions )-----*/
//NONE
//*********( THE END )***********
Receiver Code:
/* YourDuinoStarter Example: nRF24L01 Receive Joystick values
- WHAT IT DOES: Receives data from another transceiver with
2 Analog values from a Joystick or 2 Potentiometers
Displays received values on Serial Monitor
- SEE the comments after "//" on each line below
- CONNECTIONS: nRF24L01 Modules See:
http://arduino-info.wikispaces.com/Nrf24L01-2.4GHz-HowTo
1 - GND
2 - VCC 3.3V !!! NOT 5V
3 - CE to Arduino pin 9
4 - CSN to Arduino pin 10
5 - SCK to Arduino pin 13
6 - MOSI to Arduino pin 11
7 - MISO to Arduino pin 12
8 - UNUSED
- V1.00 11/26/13
Based on examples at http://www.bajdi.com/
Questions: terry@yourduino.com */
/*-----( Import needed libraries )-----*/
#include <SPI.h>
#include <nRF24L01.h>
#include <RF24.h>
#include <Servo.h>
/*-----( Declare Constants and Pin Numbers )-----*/
#define CE_PIN 9
#define CSN_PIN 10
// NOTE: the "LL" at the end of the constant is "LongLong" type
const uint64_t pipe = 0xE8E8F0F0E1LL; // Define the transmit pipe
/*-----( Declare objects )-----*/
RF24 radio(CE_PIN, CSN_PIN); // Create a Radio
/*-----( Declare Variables )-----*/
int joystick[2]; // 2 element array holding Joystick readings
Servo servoRight;
Servo servoLeft;
void setup() /****** SETUP: RUNS ONCE ******/
{
Serial.begin(9600);
delay(1000);
Serial.println("Nrf24L01 Receiver Starting");
radio.begin();
radio.openReadingPipe(1,pipe);
radio.startListening();
servoLeft.attach(6);
servoRight.attach(5);
servoLeft.write (0);
servoRight.write(0);
}//--(end setup )---
void loop() /****** LOOP: RUNS CONSTANTLY ******/
{
while ( radio.available() )
{
// Read the data payload until we've received everything
// Fetch the data payload
radio.read( joystick, sizeof(joystick) );
Serial.print("X = ");
Serial.print(joystick[0]);
Serial.print(" Y = ");
Serial.println(joystick[1]);
// angle = map (joystick[0], 0, 1023, 0, 179);
servoLeft.write(map (joystick[0], 0, 1, 0, 180));
servoRight.write(map (joystick[1], 0, 1, 0, 100));
}
Serial.println("No radio available");
}//--(end main loop )---
/*-----( Declare User-written Functions )-----*/
//NONE
//*********( THE END )***********
Transmitter Schematic:
Receiver Schematic